In answer to my own question... IT DOES work. I built a super simple plain Jane 84" BOC screen, ran 2 vertical boards up the back, attached the flat panel holders, and hung my screen on the stand. Once I have good light in the room I will take pictures. I think this may have a great amount of Spousal Approval Factor, as the stands are quite attractive, but that is just me saying that.
I have to decide on the replacement projector, and love my AE900 Panny for the lens shift etc, but I want to play with a 1080P projector now. Was thinking HD3300, or Epson 3010, or Panny 7K.